Sample 88-001

NavDat sample number 57491 · DIORITE

Sample

Sample ID	88-001
Rock name	DIORITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.3415
Longitude	-121.638
State / province	Washington

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
20		15	25

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	62.29		WT%	XRF
TIO2	0.76		WT%	XRF
AL2O3	17.22		WT%	XRF
FEO	5.03		WT%	XRF
MNO	0.09		WT%	XRF
MGO	3.12		WT%	XRF
CAO	6.22		WT%	XRF
NA2O	3.83		WT%	XRF
K2O	1.24		WT%	XRF
P2O5	0.2		WT%	XRF

References

Swanson, Donald A (1994) Geologic map of the East Canyon Ridge Quadrangle, southern Cascade Range, Washington. Open-File Report - U. S. Geological Survey. 1994.